Projectile.



No. 879,079. .PATENTED FEB.11, 1908.

J. A. BON.

PROJEGTILE.

APPLICATION FILED DEO.26.1906.

ter or a sporting or other cartridge.

construction of the im roved projectile.

,Fig. 2 is a plan thereof.

the line D-D of Fig. 1.

each other upon the axis of'the JULES AUGUSTIN BON, O

r VINGENNES, FRANCE.

PROJ'EGTILE Specification of Letters Patent.

Patented Feb. 11, 1908.

Application filed December 26,1906. Serial No. 349. %32.

T 0 all whom it may concern:

Be it known that I, JULEsAUGUSTIN BON, of Pavilion 10, Vieux Fort, Vincennes, Seine, Republic of France, lieutenant colonel in the Twelfth Regiment of Artillery, have invented Improvements in Projectiles, of which the following is a full, clear, and exact description.

The present invention relates to an elongated projectile which, by its construction and during its movement in the air, has its longitudinal axis always brought to the tangent to the trajectory of its center of gravity, on which it takes a position of stable equilibrium, without its being necessary to impart to the projectile a rotary motion about this longitudinal axis. This projectile may be fired in a smooth bore gun or ordnance, or employed for loading a shell, a case shot canis- This invention will be hereinafter described with reference to "the accompanying drawing, in which; v

Figure 1 shows in elevation a first form of jg. 3 is anunder side view. Fig. 4 is a transverse section on Fig. 5 shows in elevation a second form of construction of in improved projectile. Fig. 6 is a plan thereo Fig. 7 is .an under side view. Fig. 8,is a transverse section on the line E-E of Fig. 5.

My im roved rojectile comprises: 1. A solid hea very e ongated and with a very sharp'point, forming the'projectile rope'r. 2. A directing piece rigidly fixed tot 1e rear part of the head to form a kind of rudder always directing the common axis into the direction of the motion.

In the first form of construction shown in the drawing, Figs. 1 to 4, the head A is cylindrical; it is surmounted by anogival point and terminated in the rear by the directing piece B having four branches, formed by tour plates or bearings very thin crossing projectile.

In the second form of construction shown in the drawing Figs. 5 to 8, the head A has the form ofa prism with a hexagonal base; it

is. surmounted by a pyramidal point and is terminated in the rear by a directing piece B with three branches or ribs. The grooves formed by the branches or ribsof thedirec ing pieces have their inner ends inclined to correspond with the incline of the points or heads.

The head of the projectile may be of square section with pyramidal point; in that-case the directing piece, will be the four branches. The prism with hexagonal or square bases give a minimum lost space in the case of a packing or stacking together in the interior of a shell, or of a case-shot canister, or a cartridge; the directing piece should be light; it is necessary and suflicient if it directsthe head. and assists the initial pressure or iln act of the gases. It is litter: to the head y an incline of the same form as the point, but hollows.

The forms, details, bore, total heights and the height of each constituent part of this projectile may obviously be varied without in any way departing from the nature of the -1I1VGIll310l1.

I claim 1. A projectile, comprising a head having a pointed end, and adirccting piece or tail of the same diameter as the head and having longitudinal groovesforming a plurality of ribs, the. walls of'the grooves at their inner ends being inclined to correspoml with the incline of the point of the head.

2. A projectile, comprising a head hex:- agonal 1n cross section with a pyramidal 

